Mapping cells to symbols
AssigneeSamsung Electronics Co., Ltd.
InventorsBelkacem Mouhouche, Daniel Ansorregui, Alain Mourad, Hong-sil Jeong
Life of this patent
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Abstract
A method for mapping cells onto symbols is provided. The cells include two or more cells processed by pre-coding in groups, the symbols include N symbols in a time-sequence, and each symbol includes M carriers in a frequency-order. The method comprises: mapping each cell to a carrier of a symbol; and frequency interleaving the carriers of each symbol. The mapping and the frequency interleaving are performed such that, following the frequency interleaving, the cells of a group of pre-coded cells are each mapped to carriers having the same carrier frequency or to carriers having carrier frequencies differing by no more than a threshold.
Claims22
A method for mapping cells onto symbols, wherein the cells comprise two or more cells processed by pre-coding in groups, the symbols comprise N symbols in a time-sequence, and each symbol comprises M carriers in a frequency-order, where each of N and M is an integer greater than 0, the method comprising:
- mapping each cell to a carrier of a symbol;
- and
- frequency interleaving the carriers of each symbol,
- wherein the mapping and the frequency interleaving are performed such that, following the frequency interleaving, the cells of a group of pre-coded cells are each mapped to carriers having the same carrier frequency or to carriers having carrier frequencies differing by no more than a threshold.
A method for de-mapping cells from symbols, wherein the cells comprise two or more cells processed by pre-coding in groups, the symbols include N symbols in a time-sequence, and each symbol comprises M carriers in a frequency-order, where each of N and M is an integer greater than 0, the method comprising:
- frequency de-interleaving the carriers of each symbol;
- and
- de-mapping cells from carriers of each symbol,
- wherein, prior to the frequency de-interleaving, the cells of a group of pre-coded cells are each mapped to carriers having the same carrier frequency or to carriers having carrier frequencies differing by no more than a threshold.
An apparatus for mapping cells onto symbols, wherein the cells comprise two or more cells processed by pre-coding in groups, the symbols comprise N symbols in a time-sequence, and each symbol includes M carriers in a frequency-order, where each of N and M is an integer greater than 0, the apparatus comprising:
- a mapper configured to map each cell to a carrier of a symbol;
- and
- a frequency interleaver configured to frequency interleave the carriers of each symbol,
- wherein the mapper and the frequency interleaver perform the mapping and the frequency interleaving such that, following the frequency interleaving, the cells of a group of pre-coded cells are each mapped to carriers having the same carrier frequency or to carriers having carrier frequencies differing by no more than a threshold.
Dependencies are inferred from the claim text.